Improvement in covering steam-boilers



UNITED STATES"v PATENT OFFICE.

WILLIAM' PET-Ess, oEuALTrMoE-E, MARYLND, AssIGNoE To HniisELE AND ALFRED BUCK.

,Specideationforming part of Letters-Patent No. 36,892, dated August Q6, 1862.

T 0 all whom.' it may concern.-

f Be itV known that LAWILLIAM PETERS, of the city of Baltimore, in the State of Maryland, have invented a certain new and useful Improvement in ,Covering Steam-Boilers, Steam-Pipes, 85e., with `lion- Conductin Material; and I do hereby declare that the fol- `lowing is a full, clear, and exact description thereof, reference. being had to ltheV drawing forming. a part of this specification and to the letters and marks thereon.

Covering or investing the' shell of A'steamboilers, steam-pipes, cylinders, Ste., as praciced'by Watt, Eve, and other earlier inventors, has been regarded as of considerable value, though subject to objections. When a wood casing or jacket is made use of, itis lia-l ble to become charred or tired, and thus eudanger thehvessel, if used onboard oasteamship or boat; and when a-metal jacket is used and the jacket-space is filled iii-with ysander earth the Weight of the'jacket audits filling makes the objection. One or the other of these objetions lexists against the use of felt, cloth, briQk, clay, &c., andi hence it is very desirable to have an article or substance -for such covering that is not opefn to either of these or material, or'vvith mineral substances, a com binationof asbestus with hemp; or some one or more of these substances may readily be made by subjecting the asbestos and the substances used withit to hydraulic or 'other pressure, the elements of the combination having been exposed to water or some other liquider fluid, or not so exposed, as may-be necessary to put the materials' in a proper condition for pressure. One way of making slabs or plates or sheets of such combination is =to place layers of asbestus and layers of some animal or vegetableflber or substance in a tub or vat, the asbestus and the other material alternating,and then to foreethrough such layers a currenty of steam or Water, and when the materials have become sutlicieutly moisteued'to take them out and press the mass into such form, slabs, sheets, plates, Ste., as is desirable. ,Other Ways for making this eomb'ined covering may be adopted The charac ter of the material used in combination rwith the asbestus and the special form or character of the surface to be covered will generally indieate the course of .preparati-on to be followed.

The drawing forming partof this specification shows a boiler, a, and steam-pipe bicovered in part with'sheets of this composition, such sheets or covering beingindicatcd bythe blue coloring around the pipe and boiler.

The thickness of this covering may be such :as may be found necessary to prevent the escape of the heat or to fully protect the surface exposed to the heat. 1n some instances it may be used as av sheathing forsea going or.

other ships and vessels.'

What I claim as my invention,` and desire to secure by Letters Patent, is-

Covering steam-boilers, pipes,` cylinders, &c., Withthe sheets, plates, 85e., of the composition .herein named.

This specification signed this 26th day of April, 1862,

WM. PETERS.

Witnesses:

Tues. T. EVEEETT, J. W. MOHLER. 

